Cycle Criterion

The aim is to show that the regular movements of pendulums ( for example in clocks) helps the mechanism to work properly. The weight of any pendulum can’t change the cycle criterion.

For Teachers

For Pupils

Making a Kaleidoscope

A kaleidoscope is a tube containing mirrors which reflect and create constantly changing symmetrical patterns from small pieces of colored glass held at one end of the tube; anything that changes constantly.

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